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JOHN DARLE, onoIIIcAoo, IL'LINoIs.

Letters Patent No. 96,781, dated November 16, 1869; antedated November 5, 1869.

APPARATUS FOR 'UNLOADING CARS.

The Schedule referred to in these Letters, Patent and making part of the same.

To all whom tt may concern:

Beit known that I, JOHN DABLE, of Chicago, in the county of Cook, and' State of Illinois, have invented a new and improved Machine for Unloading Gars; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being` had to the accompanying drawings, and letters marked thereon, making a part of this specification, in which- Figure 1 is a perspective representation of my improved machine.

Figure 2, a perspective view of the sp1ing-device for putting the drum in clutch with the shaft.

Figure 3, a broken plan view of the bar which supports the rope-winding devices.

Figure 4, an elevation of the ratchet for operating the catch which locks the clutch-lever.

Figure 5, an elevation of the spring removed from its case.

The nature of the present invention, in general terms, consists in the novel construction of the swinging frame, it heilig pivoted to the shaft; of the drum, and provided with adjustable pulleys, for the convenience of bringing the draught-rope opposite the door of a car, and an automatic sheave-block for laying the rope on the drum, the whole operating, with other mechanism, as hereinafter shown.

n represents a substantial fra-me, which is bolted or otherwise securely fastened to a suitable feviundation,`

A, and which is conveniently arranged to support a shaft, B, and other working-parts ofthe machine.

A swinging li'ame, A', has its arms I pivoted tothe shaft Bfig. 1, and it is provided with .steel or iron rods, P Q- and R S, bolted fast to lugs, O K, which project above and below said arms-I; and it is properly braced with rods Y Y, whose. ends pass around the rooills l Q R S, and bear against the inside of the lugs O The rods P Q pass through iron standards, W and W Z, which have a lateral adjustment on the rods, and are held in position by means of an eye-bolt, 13, (fig.l1 and A,) passing around the rod Q, and through the top Z of the lstandard W Z, and by a nut, 8:, on its upper end. l

These standards support two curved bars, X, provided with lugs, X', through which bolts are put for pulleys, 14,'to rotate on. i

The rods It S pass through the ends M of the sliding frame, supporting the pulleys 15, which guide the draught-rope 16, when it is being paid out from, and being wound on a drum, C.

This frame is arranged to operate automatically, and so move on the rods R S, as properly to lay the rope 16 on the drum, without overlapping it, by means of the following devices:

A cylinder, a, is fastened to the ilauge D of the cylinder C, and is provided with a screw-thread, on which a cylindrical nut, E, turns.

This nut is pivoted to a slotted lever, F, which is pivoted, near its middle part, to an adjustable bar, H, by a bolt, 20, and also to connecting plates, T, the latter being pivoted to a lug projecting out from one end, M, of the frame M V.

The bar H is provided with slotted. holes, in order that it may be adjusted longitudinally on the bolts 18 18', which hold it to au arm, J, iig. 1.

This arm is rigidly attached to one of the arms I of 'the frame A', aud itis slotted out at the place where the bolt 18 passes through it, to allow the bar H to swing on the bolt 18, far enough, so to increase or diminish the leverage between the bolts G, 20, asQto give the frame M V such a movement ou the rods It S as will correspond with the speed with which the length of the drum C is to be taken up with the rope 16.

By me'ans of this construction and arrangement, the necessity for a lateral adjustment of the swinging frame, similar to the adjustment of the frame show'n in patent, No. 56,906, granted to me, August 7, 1866, is obviated, while, at. the same time, the rope 16 is brought opposite to the car-door with equal' facility, and the rope laid ou the drum in a manner so perfect, that it will wear much longer than when allowed to kink` and overlap its coils. Another advantage is gained in the ropes having. only one angle from the drum C to the pulleys 14, and that being in such a plane as not to draw thev ends of pulleys 15 against the plates V of the frame M V, thus obviatin g friction, and the use of vertical pulleys to hold the rope 16 down at a point which is between t-hedrum G and pulleys 14.

The devices for reversing the motion of the drum C, are as follows:

A pinion, c, is fitted to rotate on the shaft B, and it is rigidly attached to the end of the screw-cylinder a, and also to the part d of a clutch, d e, by means of sliding dowels, (tig B rand as the rope 16 is drawing olf from the drum O, the pinion o drives a pinion 9, (lig. 2,) attached to the same shaft 12 as a coil-spring, 10, (iig. 5,) and consequently.winds the spring up; and when the rope is slackened, the spring will rotate the drum backward for enonghfor the ratchet b, figs. 2 and 4, to lift a catch, 2, and, consequently, release the clutch-lever l5', which is their so drawn out by a chain and weight, 6 7, as to put the shaft B in clutch with the drum C; and, as the nut E strikes the dowelpins, thel clutch (l e is put in gear, and rotated far enough to draw the lever B' back, by means of a chain, t, attached to the periphery ofthe part e, said level' B', and the frame u. The clutch-fastening vto the drum is 4not' shown, for such a device is well understood by those familiar with machines of the kind described, and as it is no part of this invention. l

The frame A' is held at any required height by means of ropes, C C', fastened to the lugs O, and to any convenient place above. The machine operates automatically, and requires only that the shaft B be rotated about .sixty revolutions per minute, and the shovel, to which the rope 16 is attached, carried back into the ear in the usual manner.

Having thus described my invention,

What l claim, and desire to secure by Letters Patent of the United States, is

1. The swinging frame A, consisting of the arms I,

rods P Q and R S, lugs K O, and braces Y, in combinut E, and screw-cylinder a, for laying the rope on the drum C, as set forth.

3. The combination of' the frame A', frame M V, standards W, W Z, bars X, pulleys 14, ropes 16, GO, lever F, bar H, arm J, nut E, and screw-cylinder a', as set forth.

JOHN DABLE.

Witnesses:

G. L. GHAPIN, E. E. GIBSON. 

